these 3 derivations will be built:
  /nix/store/c623klnkdcc20b223mc0mw1zcyj64fs2-inheritCargoArtifactsHook.drv
  /nix/store/8wz0pjncljx076y3pwzwippnhf2zx46n-harmonia-deps-3.1.0.drv
  /nix/store/sna63skn2h9a62cf44inai2ry4v0si20-harmonia-llvm-cov-3.1.0.drv